Self-Assessment Explained

Personal Tax Returns, also known as Self-Assessment Tax Returns, must be submitted by individuals that have earned income which HMRC is unaware of. This is a system that HMRC uses to collect Income Tax for income that is not reported by third parties, such as an employer.

The Self-Assessment shows how much an individual has earned, and from what sources over the course of a tax year. The tax year for individuals runs from the 6th of April to the 5th of April the following year, e.g., the 2022/23 Tax Year runs from the 6th of April 2022 to the 5th of April 2023.

As an individual, you are required to send a tax return if you were:

  • self-employed as a “sole trader” and earned more than £1,000
  • a partner in a business partnership.

You may also be required to send a tax return if you have other untaxed income, such as:

  • some COVID-19 grants or support payments
  • income from renting a property
  • tips and commissions
  • interest from savings
  • income from investments (e.g., stocks or cryptocurrency)
  • dividends
  • foreign income

This list is not exhaustive, as there may be other reasons why you may choose to fill in a Tax Return, for example to claim some Income Tax Reliefs, or prove Self-Employment status to claim Tax-Free Childcare or Maternity Allowance.

We will require either your accounts (if you are a Sole Trader), or year-end balances for the relevant sections, such as a P60 for Employment, a Tax Report from your investment platforms, etc.– bookkeeping is not included with this service. Please see our Bookkeeping section or our Sole Trader – Annual Accounts service for more information.

The deadlines for filing your Self-Assessment Tax Return and paying your liabilities are:

  • Self-Assessment Registration5th of October
  • Filing Paper ReturnsMidnight 31st of October
  • Filing Online ReturnsMidnight 31st of January
  • Paying LiabilitiesMidnight 31st of January

Our fees vary based on the number of sections included in your Tax Return, the complexity of your tax affairs and the quality of your records.

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